Ratchet-drill.



J. PETERSON.' RATGHBT DRILL. APPLICATION FILED AYE. 1B, 1907.

Patented May 18, 1909.

VIl.

W1 TNESSES /wp UNITED STATES PATENT OFFICE.

JOHN PETTERSON, OF STEUBENVILLE, OHIO.

RATCHET-DRILL.

To all whom it may concern.'

Be it known that I, JOHN PETTERSON, a citizen of the United States of America, residing at Steubenville, in the county of Jefferson and State of Ohio, have invented certain new and useful Improvements in Ratchet- Drills, of which the following is a specification, reference being had therein to the accompanying' drawing.

This invention relates to ratchet drills, and the invention has for its object to provide a novel mechanism for easily and quickly rotating a tool or drill holder and automatically feeding the same, while in operation.

My invention aims to provide a simple and inexpensive ratchet drill wherein positive and reliable means are employed for effecting a rapid manipulation of the drill, permitting an operator to rotate the drill upon one stroke of the operating lever and feed the drill upon the return stroke, thus saving considerable time and labor in the operation of the drill.

In connection with the ratchet drill, I have devised a novel tool or drill. holder and have located within the feed of the drill novel means for ejecting the tool or drill from the holder when it is desired to change the same. I attach considerable importance to this feature of my invention insomuch as it is an improvement upon the ratchet drills disclosed in Patents Nos. 715,597 and 678,128, granted t0 me December 9th, 1902, and July 9th, 1901, respectively. In these patents the actuating mechanism of the present invention is disclosed, but I have changed the tool or drill holder and the feed in order to provide a more effective ratchet drill, it being possible to use tools and drills of various types, while in the above mentioned patents no allowance is made in the ratchet drills for a tool or drill having a contracted shank.

The detail construction entering into my invention will be hereinafter mor'e fully described and then specifically pointed out in the appended claims.

Referring to the drawing forming part of this specification, like numerals of reference designate corresponding parts throughout the several views, in which Figure 1 is a longitudinal sectional view of my improved ratchet drill, Fig. 2 is a horizontal sectional view of the same.

To put my invention into practice, I construct my improved ratchet drill of a cylindrical tool or drill holder 1 having a con- Speccation of Letters Patent.

Application filed April 18, 1907.

Patented May 18, 1909.

Serial No. 368,904.

tracted threaded end 2 provided with a tool or drill socket 3. The drill or tool holder 1 is provided with a peripheral flange 4 upon its upper end having an annular ball race 5 formed therein, said holder also being pro* vided with a threaded socket 6 communicating with the socket 3 by a vertically disposed opening 7.

Secured centrally of the cylindrical drill and tool holder 1 by a key 8 is a ratchet wheel 9, and surrounding said holder upon each side of said ratchet wheel are the straps 10 of a movable head 11, the end of said head being provided with a threaded socket 12 to receive a plug 14 carrying the tubular operating lever 15 of the drill, said lever being secured on the block in any suitable manner as by brazing or otherwise. In the outer end of the lever 15 is mounted a sleeve 1.6 having a spring seat 17 formed therein. In the sleeve 16 is movably mounted a plunger 18 having a head 19 and a recess 20. Protruding into the recess 20 is a screw or pin 21 adapted to limit the movement of the plunger 18. The inner end of the plunger 18 is connected to an actuating rod 22 extending through the tubular lever 15, and longitudinally alining openings 23 and 24 formed in the plug 14 and the head 11 respectively. Interposed between the end of the plunger 18 and the seat 17 is a spring 25, said spring surrounding the actuatingrod 22 and normally holding said rod and the plunger 18 in the position illustrated in Figs. 1 and 2 of the drawings.

The head 11 is cut away to provide a horizontal recess 26 in which is pivoted, as at 27, pawls 28, said pawls being normally held in engagement with the ratchet wheel 9 by a coiled spring 29 interposed between the pawls 28.

J ournaled in the head 11 and assing through the recess 26 is a vertically dlsposed shaft 30, said shaft within the recess 26 being rectangular in cross section, as at 81, and provided with an L-shaped lever 32. The shorter arm 33 of the lever is normally held in engagement with the end of the actuating rod 22 by a coiled s ring 34, engaging the longer arm 35 of said ever, said coiled spring being seated in the head 11, as at 36. One end of the shaft 30 protrudes beyond the head 11, and is provided with a pawl 37, which turns with said shaft, said pawl engaging a ratchet wheel 38 mounted for rotation upon ball bearings 39 carried within y the race of the flange 4. Formed integral with the ratchet wheel 38 is an interiorly threaded casing 40, the outer side of said casing having angularly disposed faces 41, corresponding to a heXagon nut. The casing 40 and the ratchet wheel 88 are-retained in engagement with the drill and tool holder 1 by a threaded plug 43 detachably mounted in the socket 6 o said holder, said plug being provided with diainetrica'lly opposed openings 43, whereby a Spanner wrench can be inserted in the casing for screwing the plug 42 into the socket 6.

1n the casing 40 is adjustably mounted a feed screw 44 having a cap 45 anda longitudinally disposed bore 46. ln the bore 46 is loosely mounted a rod 47 having contracted ends 48 adapted to normally project into openings 49 formed in the `lug 42 and the cap and to aline therewith upon the assuming of all possible positions by said feed screw. The cap 45 carries the conventional form of grip pins 50.

Upon the contracted threaded end 2 of the holder 1 is mounted a sleeve 51 employed for holding the shank 52 of the drill or bit in the socket 3 of the holder, the contracted end 53 of said shank entering the opening 7 of the holder.

It is obvious that where the various parts of the ratchet drill are connected together by threads, that the threads will be either right or left handed, as necessary, whereby the parts of the ratchet drill will not become separated while the same is being used.

It is thought that the novel construction of my im rovement will be fully understood without 'urther description, and l desire to make such changes in the size, roportion and minor details as are permissi le by the appended claims.

Vhat I claim and desire to secure by l Letters Patent, is 1. A drilling device including a holder having a socket adapted to receive the shank j of a drill orbit and having a longitudinal l perforation in line therewith, a vhollow feed screw adjustably mounted upon said holder j with one end adapted to abut against the j support and having a longitudinal perforation therethrough in line with the perforation in j the holder, and a drill ejector slidably l mounted within said perforations with one cnd adjacent the en d of the drill shank and the other end projectable through the perforation in the end of the feed screw, said Vejector being supported solely by the drill or bit While the latter is in its operative position. 2. A ratchet drill including a drill or bit holder adapted to receive the shank of a drill or bit, a feed screw adjustably-supported upon said holder and having a longitudinal bore, said screw having an integral cap provided with a erforation, a drill ejector positioned within said bore and freely movable longitudinally of said screw and irrespective of the movement of the screw, one end of said ejector normally projecting through said perforation when the feed screw is in its innermost position and vsaid end lying within said bore and alining with said perforation when the feed screw is in its outermost position, the other end of said ejector being supported by the shank of said drill or bit `while the latter is in its operj ative position. Y

In testimony whereof I affix my signature Y l in the presence of two witnesses. l JOHN vPE'FIERSON, Vtnesses:

MAX H. SRoLovrrZ,

K. H. BUTLER. 

